| 单词 |
nucleoloid |
| 释义 |
nucleoloid, a. and n.
Brit. |njuːˈklɪəlɔɪd|, |ˌnjuːklɪˈəʊlɔɪd|, U.S. |ˌn(j)uˈkliəˌlɔɪd|
[‹ nucleolus n. + -oid suffix. Compare earlier nucleolid n.]
A. adj. Biol. That resembles a nucleolus. rare.
1900W. A. N. Dorland Med. Dict. 447/1 Nucleoloid, resembling a nucleolus.
B. n. Bot. A body resembling a nucleolus, found in the cytoplasm of some cells undergoing meiosis.
1965Japanese Jrnl. Vet. Res. 13 101 The nucleoloid bodies were morphologically independent of the nucleolus and the chromatin. 1970Protoplasma 69 188 These bodies contain both RNA and protein and have most of the characteristics of nucleoli; but they are not formed at the nucleolus-organizing regions of chromosomes, and for this reason and because of their presence outside of the nuclei during parts of the division cycles we will refer to them provisionally as nucleoloids. 1977Philos. Trans. (Royal Soc.) (B.) 277332 Most of these [bodies] are released into the cytoplasm, to form cytoplasmic ‘nucleoloids’ known from early accounts of angiosperm male meiosis and well described for Fritillaria by Frankel (1937). 1994Jrnl. Cell Sci. 107621 Nucleoloids were found in two clearly distinguishable morphological varieties: one similar in morphology to the nucleolus.., and another surrounded by many ribosome-like particles. |
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